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Caesium-137 (Cs-137), or radiocesium, is a radioactive isotope of caesium which is formed as one of the more common fission products by the nuclear fission of uranium-235 and other fissionable isotopes in nuclear reactors and nuclear weapons.
238 U, and 232 Th are alpha-emitting isotopes that also emit weak gamma rays, and whose daughters emit alpha, beta, and gamma radiation, thus these radioistiopes are detectable with alpha or beta–gamma count rate meters. View Complete Catalog in Browser >> (538 pages) get Acrobat
241Am (Americium) Americium is a man made radioactive isotope, and is commonly found in smoke detectors. This is a typical gamma spectrum from Americium, as you can see, the tall peak at 59.6 KeV is very obvious and over powers everything else, it also has a gamma at …
Am241 Gamma Spectrum. With its half-life of 432.2 years, the americium in a smoke detector decreases and includes about 3% neptuniumafter 19 years, and about 5% after 32 years.
The source is an alpha emitter, and in the decay process it also kicks out a gamma at 59.6KeV.
The … Americium-241 is the only synthetic isotope to have found its way into the household, where the most common type of smoke detector (the ionization-type) uses AmO2 (americium-241 dioxide) as its source of ionizing radiation. Gamma rays can pass completely through the human body; as they pass through, they can cause damage to tissue and DNA.
To Download the Gamma Spectrum data, select from the alphabetical list below. Gamma Rays Gamma RaysA form of ionizing radiation that is made up of weightless packets of energy called photons. It is among the most problematic of the short-to-medium-lifetime fission products because it easily moves and spreads in nature due to the high water solubility of caesium’s most commo… Am-241 found in the … Uranium-235 (235 U).
Americium-241 (241 Am) also emits gamma rays and can therefore be detected with an alpha count rate meter or a beta–gamma count rate meter.
432.2 years: On this page: Americium in the environment; Americium sources; Americium and health; Americium in the Environment. This isotope is preferred over Ra because it emits 5 times more alpha particles and relatively little harmful gamma radiation.